2 In mammals, males have two different sex chromosomes (X and Y) and females have two similar sex chromosomes (X and X). However, in birds males have two similar sex chromosomes (Z and Z), while females have two different sex chromosomes (Z and W). (a) Complete the genetic diagram to show how sex is inherited in birds. Genotype of male parent Genotype of female parent Gametes from male parent Gametes from female parent Genotypes of offspring Sex of offspring

2 In mammals, males have two different sex chromosomes (X and Y) and females have two similar sex chromosomes (X and X). However, in birds males have two similar sex chromosomes (Z and Z), while females have two different sex chromosomes (Z and W). (a) Complete the genetic diagram to show how sex is inherited in birds. Genotype of male parent Genotype of female parent Gametes from male parent Gametes from female parent Genotypes of offspring Sex of offspring

Name: 2 In mammals, males have two different sex chromosomes (X and Y) and
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Description: 2 In mammals, males have two different sex chromosomes (X and Y) and females havetwo similar sex chromosomes (X and X).However, in birds males have two similar sex chromosomes (Z and Z), while femaleshave two different sex chromosomes (Z and W).(a)

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter11: Meiosis: The Cellular Basis Of Sexual Reproduction

Section11.2: Mechanisms That Generate Genetic Variability

Problem 2SB: Consider an animal with six pairs of chromosomes; one set of six chromosomes is from this animals...

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In Drosophila, two genes, one for body color and one for eye color, are carried on the same chromosome. The wild-type gray body color is dominant to black body color, and wild-type red eyes are dominant to purple eyes. You make a cross between a fly with gray body and red eyes and a fly with black body and purple eyes. Among the offspring, about half have gray bodies and red eyes and half have black bodies and purple eyes. A small percentage have: (a) black bodies and red eyes; or (b) gray bodies and purple eyes. What alleles are carried together on the chromosomes in each of the flies used in the cross? What alleles are carried together on the chromosomes of the F1 flies with black bodies and red eyes, and those with gray bodies and purple eyes?
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Consider an animal with six pairs of chromosomes; one set of six chromosomes is from this animals male parent, and the homologous set of six chromosomes is from this animals female parent. How many combinations of chromosomes are possible in the gametes of an individual of this species if we look onlyat independent assortment of chromosomes, disregarding the effect of crossing-over?
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1. Hair or fur length in cats is controlled by a single, autosomal gene; the short hair-allele is dominant to the allele for long hair. Hair color is produced by a different gene which is located on the X chromosome. One allele for this sex-linked gene produces yellow, while an alternate allele produces black fur color; individualswhich are heterozygous for these alleles are calico or tortiseshell in color.If a long-haired, black male is mated with a calico female homozygous for short hair what kind of kittens will be produced in the Ej generation? Give both genotypes and phenotypes; express the genotypes bothsymbolically and in words. Label answers clearly!!
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